There are lots of SPF wizards out there, but we recommend using SPF Wizard for this tutorial.

To get started, enter "Your Domain" name in the first field. If you send emails from news @modernyoga.com, your domain is modernyoga.com. If you don't have a domain, you don't have to worry about setting up your SPF record for now.

Next, look for the field that says "Any domains that may deliver or relay mail for this domain" and enter e2ma.net

Lastly, from the last dropdown menu field "How strict should be the servers treating the emails?", select "Fail (Not compliant will be rejected)"

Here is a screenshot with the highlighted fields you'll need to edit.

This wizard will generate your new SPF record which looks like this:

Copy it and paste it somewhere you can get to it, like a blank email.
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2. Send your updated SPF record to your technical contact.

You'll now add the updated SPF record to your domain's DNS record.

If you're not sure who your domain's technical contact is, there's an easy way to find out. Go to www.whois.net and type your domain name in the search box. Locate the "technical contact" in the list, and send your new SPF record his or her way. It's a pretty easy update to make, so be sure and ask for a confirmation email when it's done.
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3. Celebrate your publishing prowess.

You're now a published SPF author, and you've just helped ISPs more easily authenticate your emails. Well done!

Of course, if you get stuck or have questions along the way, we're always here to help.